/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:09:07,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:09:07,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:09:07,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 01:09:07,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 01:09:07,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 01:09:07,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 01:09:07,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 01:09:07,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 01:09:07,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 01:09:07,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 01:09:07,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 01:09:07,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 01:09:07,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 01:09:07,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 01:09:07,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 01:09:07,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 01:09:07,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 01:09:07,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 01:09:07,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 01:09:07,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 01:09:07,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 01:09:07,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 01:09:07,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 01:09:07,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 01:09:07,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:09:07,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:09:07,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:09:07,500 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 01:09:07,525 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:09:07,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:09:07,526 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:09:07,526 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:09:07,526 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:09:07,527 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:09:07,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:09:07,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:09:07,527 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:09:07,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:09:07,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:09:07,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:09:07,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:09:07,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:09:07,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:09:07,528 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:09:07,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:09:07,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:09:07,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:09:07,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:09:07,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:09:07,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:09:07,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:09:07,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:09:07,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:09:07,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:09:07,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:09:07,530 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:09:07,530 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:09:07,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:09:07,531 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:09:07,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:09:07,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:09:07,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:09:07,731 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:09:07,731 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:09:07,732 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2022-01-10 01:09:07,801 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d30aff51/ef76f4553d1348cabd5b72aef089e21b/FLAG238e3426c [2022-01-10 01:09:08,160 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:09:08,160 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2022-01-10 01:09:08,168 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d30aff51/ef76f4553d1348cabd5b72aef089e21b/FLAG238e3426c [2022-01-10 01:09:08,558 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d30aff51/ef76f4553d1348cabd5b72aef089e21b [2022-01-10 01:09:08,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:09:08,561 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:09:08,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:09:08,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:09:08,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:09:08,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:09:08" (1/1) ... [2022-01-10 01:09:08,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@557259d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:08, skipping insertion in model container [2022-01-10 01:09:08,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:09:08" (1/1) ... [2022-01-10 01:09:08,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:09:08,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:09:08,794 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c[14698,14711] [2022-01-10 01:09:08,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:09:08,803 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:09:08,841 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c[14698,14711] [2022-01-10 01:09:08,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:09:08,852 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:09:08,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:08 WrapperNode [2022-01-10 01:09:08,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:09:08,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:09:08,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:09:08,853 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:09:08,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:08" (1/1) ... [2022-01-10 01:09:08,886 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:08" (1/1) ... [2022-01-10 01:09:08,918 INFO L137 Inliner]: procedures = 32, calls = 48, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 538 [2022-01-10 01:09:08,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:09:08,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:09:08,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:09:08,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:09:08,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:08" (1/1) ... [2022-01-10 01:09:08,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:08" (1/1) ... [2022-01-10 01:09:08,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:08" (1/1) ... [2022-01-10 01:09:08,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:08" (1/1) ... [2022-01-10 01:09:08,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:08" (1/1) ... [2022-01-10 01:09:08,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:08" (1/1) ... [2022-01-10 01:09:08,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:08" (1/1) ... [2022-01-10 01:09:08,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:09:08,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:09:08,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:09:08,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:09:08,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:08" (1/1) ... [2022-01-10 01:09:08,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:09:08,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:09:08,971 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 01:09:08,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 01:09:09,000 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2022-01-10 01:09:09,000 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2022-01-10 01:09:09,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:09:09,000 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2022-01-10 01:09:09,000 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2022-01-10 01:09:09,000 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-01-10 01:09:09,000 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-01-10 01:09:09,001 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2022-01-10 01:09:09,001 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2022-01-10 01:09:09,001 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-10 01:09:09,001 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-10 01:09:09,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:09:09,001 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2022-01-10 01:09:09,001 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2022-01-10 01:09:09,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:09:09,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:09:09,001 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2022-01-10 01:09:09,001 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2022-01-10 01:09:09,080 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:09:09,081 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:09:09,456 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:09:09,463 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:09:09,463 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 01:09:09,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:09:09 BoogieIcfgContainer [2022-01-10 01:09:09,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:09:09,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:09:09,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:09:09,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:09:09,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:09:08" (1/3) ... [2022-01-10 01:09:09,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37bc5030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:09:09, skipping insertion in model container [2022-01-10 01:09:09,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:08" (2/3) ... [2022-01-10 01:09:09,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37bc5030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:09:09, skipping insertion in model container [2022-01-10 01:09:09,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:09:09" (3/3) ... [2022-01-10 01:09:09,470 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2022-01-10 01:09:09,474 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:09:09,474 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 01:09:09,505 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:09:09,509 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 01:09:09,510 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 01:09:09,535 INFO L276 IsEmpty]: Start isEmpty. Operand has 207 states, 167 states have (on average 1.5508982035928143) internal successors, (259), 168 states have internal predecessors, (259), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-10 01:09:09,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 01:09:09,542 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:09,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:09,543 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:09,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:09,549 INFO L85 PathProgramCache]: Analyzing trace with hash -518679476, now seen corresponding path program 1 times [2022-01-10 01:09:09,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:09,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288167106] [2022-01-10 01:09:09,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:09,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:09,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 01:09:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:09,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:09:09,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:09,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288167106] [2022-01-10 01:09:09,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288167106] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:09,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:09,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 01:09:09,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101644664] [2022-01-10 01:09:09,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:09,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 01:09:09,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:09,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 01:09:09,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 01:09:09,768 INFO L87 Difference]: Start difference. First operand has 207 states, 167 states have (on average 1.5508982035928143) internal successors, (259), 168 states have internal predecessors, (259), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 01:09:09,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:09,830 INFO L93 Difference]: Finished difference Result 398 states and 642 transitions. [2022-01-10 01:09:09,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 01:09:09,831 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-01-10 01:09:09,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:09,840 INFO L225 Difference]: With dead ends: 398 [2022-01-10 01:09:09,841 INFO L226 Difference]: Without dead ends: 203 [2022-01-10 01:09:09,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 01:09:09,850 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:09,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:09,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-01-10 01:09:09,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2022-01-10 01:09:09,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 164 states have (on average 1.5) internal successors, (246), 164 states have internal predecessors, (246), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-10 01:09:09,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 308 transitions. [2022-01-10 01:09:09,890 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 308 transitions. Word has length 44 [2022-01-10 01:09:09,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:09,890 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 308 transitions. [2022-01-10 01:09:09,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 01:09:09,890 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 308 transitions. [2022-01-10 01:09:09,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 01:09:09,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:09,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:09,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:09:09,893 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:09,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:09,893 INFO L85 PathProgramCache]: Analyzing trace with hash -527444980, now seen corresponding path program 1 times [2022-01-10 01:09:09,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:09,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268677463] [2022-01-10 01:09:09,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:09,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:09,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 01:09:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:09,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:09:09,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:09,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268677463] [2022-01-10 01:09:09,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268677463] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:09,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:09,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:09:09,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610246600] [2022-01-10 01:09:09,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:09,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:09:09,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:09,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:09:09,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:09:09,971 INFO L87 Difference]: Start difference. First operand 203 states and 308 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 01:09:10,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:10,043 INFO L93 Difference]: Finished difference Result 531 states and 811 transitions. [2022-01-10 01:09:10,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 01:09:10,044 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-01-10 01:09:10,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:10,046 INFO L225 Difference]: With dead ends: 531 [2022-01-10 01:09:10,046 INFO L226 Difference]: Without dead ends: 342 [2022-01-10 01:09:10,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:09:10,049 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 171 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:10,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 1586 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:10,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-01-10 01:09:10,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 203. [2022-01-10 01:09:10,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 164 states have (on average 1.4268292682926829) internal successors, (234), 164 states have internal predecessors, (234), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-10 01:09:10,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 296 transitions. [2022-01-10 01:09:10,067 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 296 transitions. Word has length 44 [2022-01-10 01:09:10,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:10,067 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 296 transitions. [2022-01-10 01:09:10,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 01:09:10,068 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 296 transitions. [2022-01-10 01:09:10,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 01:09:10,069 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:10,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:10,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:09:10,070 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:10,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:10,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1202945359, now seen corresponding path program 1 times [2022-01-10 01:09:10,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:10,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334177078] [2022-01-10 01:09:10,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:10,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:10,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:10,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:09:10,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:10,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334177078] [2022-01-10 01:09:10,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334177078] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:10,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:10,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:09:10,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319903387] [2022-01-10 01:09:10,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:10,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:09:10,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:10,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:09:10,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:09:10,285 INFO L87 Difference]: Start difference. First operand 203 states and 296 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 01:09:10,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:10,340 INFO L93 Difference]: Finished difference Result 393 states and 582 transitions. [2022-01-10 01:09:10,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:09:10,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-01-10 01:09:10,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:10,343 INFO L225 Difference]: With dead ends: 393 [2022-01-10 01:09:10,343 INFO L226 Difference]: Without dead ends: 207 [2022-01-10 01:09:10,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:10,344 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 5 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:10,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 860 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:10,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-01-10 01:09:10,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2022-01-10 01:09:10,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 167 states have (on average 1.4191616766467066) internal successors, (237), 167 states have internal predecessors, (237), 31 states have call successors, (31), 8 states have call predecessors, (31), 8 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-10 01:09:10,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 299 transitions. [2022-01-10 01:09:10,364 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 299 transitions. Word has length 55 [2022-01-10 01:09:10,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:10,364 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 299 transitions. [2022-01-10 01:09:10,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 01:09:10,365 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 299 transitions. [2022-01-10 01:09:10,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 01:09:10,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:10,380 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:10,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 01:09:10,381 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:10,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:10,381 INFO L85 PathProgramCache]: Analyzing trace with hash -915994749, now seen corresponding path program 1 times [2022-01-10 01:09:10,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:10,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340780597] [2022-01-10 01:09:10,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:10,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:10,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:10,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:10,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-10 01:09:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:10,480 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:09:10,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:10,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340780597] [2022-01-10 01:09:10,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340780597] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:10,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:10,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:09:10,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152649654] [2022-01-10 01:09:10,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:10,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:09:10,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:10,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:09:10,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:09:10,482 INFO L87 Difference]: Start difference. First operand 207 states and 299 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 01:09:10,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:10,534 INFO L93 Difference]: Finished difference Result 564 states and 826 transitions. [2022-01-10 01:09:10,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:09:10,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 71 [2022-01-10 01:09:10,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:10,540 INFO L225 Difference]: With dead ends: 564 [2022-01-10 01:09:10,540 INFO L226 Difference]: Without dead ends: 374 [2022-01-10 01:09:10,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:09:10,548 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 227 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:10,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 622 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:10,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-01-10 01:09:10,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 364. [2022-01-10 01:09:10,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 287 states have (on average 1.4390243902439024) internal successors, (413), 288 states have internal predecessors, (413), 60 states have call successors, (60), 16 states have call predecessors, (60), 16 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2022-01-10 01:09:10,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 533 transitions. [2022-01-10 01:09:10,573 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 533 transitions. Word has length 71 [2022-01-10 01:09:10,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:10,574 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 533 transitions. [2022-01-10 01:09:10,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 01:09:10,574 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 533 transitions. [2022-01-10 01:09:10,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 01:09:10,575 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:10,575 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:10,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 01:09:10,576 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:10,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:10,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1756914315, now seen corresponding path program 1 times [2022-01-10 01:09:10,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:10,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625441851] [2022-01-10 01:09:10,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:10,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:10,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:10,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:10,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-10 01:09:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:10,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:09:10,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:10,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625441851] [2022-01-10 01:09:10,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625441851] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:10,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:10,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:09:10,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517670956] [2022-01-10 01:09:10,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:10,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:09:10,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:10,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:09:10,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:09:10,654 INFO L87 Difference]: Start difference. First operand 364 states and 533 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 01:09:10,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:10,691 INFO L93 Difference]: Finished difference Result 1009 states and 1492 transitions. [2022-01-10 01:09:10,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:09:10,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 72 [2022-01-10 01:09:10,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:10,697 INFO L225 Difference]: With dead ends: 1009 [2022-01-10 01:09:10,697 INFO L226 Difference]: Without dead ends: 662 [2022-01-10 01:09:10,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:09:10,702 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 235 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:10,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 657 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:10,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-01-10 01:09:10,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 645. [2022-01-10 01:09:10,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 496 states have (on average 1.4576612903225807) internal successors, (723), 499 states have internal predecessors, (723), 117 states have call successors, (117), 31 states have call predecessors, (117), 31 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-01-10 01:09:10,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 957 transitions. [2022-01-10 01:09:10,745 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 957 transitions. Word has length 72 [2022-01-10 01:09:10,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:10,746 INFO L470 AbstractCegarLoop]: Abstraction has 645 states and 957 transitions. [2022-01-10 01:09:10,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 01:09:10,746 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 957 transitions. [2022-01-10 01:09:10,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 01:09:10,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:10,750 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:10,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 01:09:10,750 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:10,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:10,751 INFO L85 PathProgramCache]: Analyzing trace with hash 477050637, now seen corresponding path program 1 times [2022-01-10 01:09:10,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:10,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988634754] [2022-01-10 01:09:10,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:10,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:10,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:10,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:10,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-10 01:09:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:10,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:09:10,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:10,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988634754] [2022-01-10 01:09:10,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988634754] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:10,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:10,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:09:10,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490454840] [2022-01-10 01:09:10,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:10,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:09:10,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:10,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:09:10,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:10,855 INFO L87 Difference]: Start difference. First operand 645 states and 957 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 01:09:11,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:11,159 INFO L93 Difference]: Finished difference Result 1805 states and 2723 transitions. [2022-01-10 01:09:11,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:09:11,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 72 [2022-01-10 01:09:11,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:11,166 INFO L225 Difference]: With dead ends: 1805 [2022-01-10 01:09:11,166 INFO L226 Difference]: Without dead ends: 1177 [2022-01-10 01:09:11,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:09:11,168 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 786 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:11,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [786 Valid, 778 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:09:11,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2022-01-10 01:09:11,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 770. [2022-01-10 01:09:11,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 608 states have (on average 1.4358552631578947) internal successors, (873), 611 states have internal predecessors, (873), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-01-10 01:09:11,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1121 transitions. [2022-01-10 01:09:11,209 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1121 transitions. Word has length 72 [2022-01-10 01:09:11,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:11,209 INFO L470 AbstractCegarLoop]: Abstraction has 770 states and 1121 transitions. [2022-01-10 01:09:11,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 01:09:11,209 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1121 transitions. [2022-01-10 01:09:11,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 01:09:11,210 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:11,210 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:11,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 01:09:11,210 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:11,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:11,211 INFO L85 PathProgramCache]: Analyzing trace with hash -221882142, now seen corresponding path program 1 times [2022-01-10 01:09:11,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:11,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720595569] [2022-01-10 01:09:11,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:11,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:11,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:11,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:11,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:11,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-10 01:09:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:11,278 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:09:11,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:11,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720595569] [2022-01-10 01:09:11,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720595569] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:11,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:11,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:09:11,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669630891] [2022-01-10 01:09:11,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:11,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:09:11,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:11,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:09:11,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:11,280 INFO L87 Difference]: Start difference. First operand 770 states and 1121 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 01:09:11,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:11,523 INFO L93 Difference]: Finished difference Result 1809 states and 2723 transitions. [2022-01-10 01:09:11,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:09:11,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 73 [2022-01-10 01:09:11,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:11,530 INFO L225 Difference]: With dead ends: 1809 [2022-01-10 01:09:11,530 INFO L226 Difference]: Without dead ends: 1181 [2022-01-10 01:09:11,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:09:11,533 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 783 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:11,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [783 Valid, 780 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:09:11,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2022-01-10 01:09:11,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 778. [2022-01-10 01:09:11,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 616 states have (on average 1.4301948051948052) internal successors, (881), 619 states have internal predecessors, (881), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-01-10 01:09:11,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1129 transitions. [2022-01-10 01:09:11,614 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1129 transitions. Word has length 73 [2022-01-10 01:09:11,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:11,615 INFO L470 AbstractCegarLoop]: Abstraction has 778 states and 1129 transitions. [2022-01-10 01:09:11,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 01:09:11,615 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1129 transitions. [2022-01-10 01:09:11,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 01:09:11,616 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:11,616 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:11,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 01:09:11,617 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:11,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:11,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1379275244, now seen corresponding path program 1 times [2022-01-10 01:09:11,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:11,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443315916] [2022-01-10 01:09:11,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:11,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:11,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:11,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:11,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-10 01:09:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:11,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:09:11,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:11,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443315916] [2022-01-10 01:09:11,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443315916] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:11,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:11,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:09:11,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980315270] [2022-01-10 01:09:11,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:11,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:09:11,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:11,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:09:11,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:09:11,714 INFO L87 Difference]: Start difference. First operand 778 states and 1129 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 01:09:11,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:11,962 INFO L93 Difference]: Finished difference Result 1809 states and 2715 transitions. [2022-01-10 01:09:11,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:09:11,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 75 [2022-01-10 01:09:11,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:11,968 INFO L225 Difference]: With dead ends: 1809 [2022-01-10 01:09:11,968 INFO L226 Difference]: Without dead ends: 1181 [2022-01-10 01:09:11,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:11,971 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 238 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:11,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 747 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:09:11,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2022-01-10 01:09:12,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 778. [2022-01-10 01:09:12,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 616 states have (on average 1.4237012987012987) internal successors, (877), 619 states have internal predecessors, (877), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-01-10 01:09:12,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1125 transitions. [2022-01-10 01:09:12,019 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1125 transitions. Word has length 75 [2022-01-10 01:09:12,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:12,019 INFO L470 AbstractCegarLoop]: Abstraction has 778 states and 1125 transitions. [2022-01-10 01:09:12,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 01:09:12,019 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1125 transitions. [2022-01-10 01:09:12,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 01:09:12,020 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:12,020 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:12,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 01:09:12,020 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:12,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:12,021 INFO L85 PathProgramCache]: Analyzing trace with hash -156149797, now seen corresponding path program 1 times [2022-01-10 01:09:12,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:12,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827314501] [2022-01-10 01:09:12,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:12,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:09:12,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:12,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827314501] [2022-01-10 01:09:12,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827314501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:12,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:12,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:09:12,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393399885] [2022-01-10 01:09:12,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:12,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:09:12,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:12,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:09:12,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:09:12,108 INFO L87 Difference]: Start difference. First operand 778 states and 1125 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 01:09:12,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:12,156 INFO L93 Difference]: Finished difference Result 1426 states and 2092 transitions. [2022-01-10 01:09:12,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:09:12,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 76 [2022-01-10 01:09:12,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:12,159 INFO L225 Difference]: With dead ends: 1426 [2022-01-10 01:09:12,159 INFO L226 Difference]: Without dead ends: 798 [2022-01-10 01:09:12,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:12,163 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 6 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:12,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 872 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:12,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2022-01-10 01:09:12,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 798. [2022-01-10 01:09:12,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 632 states have (on average 1.4129746835443038) internal successors, (893), 635 states have internal predecessors, (893), 124 states have call successors, (124), 41 states have call predecessors, (124), 41 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-01-10 01:09:12,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1141 transitions. [2022-01-10 01:09:12,202 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1141 transitions. Word has length 76 [2022-01-10 01:09:12,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:12,202 INFO L470 AbstractCegarLoop]: Abstraction has 798 states and 1141 transitions. [2022-01-10 01:09:12,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 01:09:12,203 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1141 transitions. [2022-01-10 01:09:12,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 01:09:12,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:12,204 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:12,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 01:09:12,204 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:12,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:12,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1992242591, now seen corresponding path program 1 times [2022-01-10 01:09:12,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:12,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801870692] [2022-01-10 01:09:12,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:12,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 01:09:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,258 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:09:12,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:12,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801870692] [2022-01-10 01:09:12,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801870692] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:12,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:12,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:09:12,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849922654] [2022-01-10 01:09:12,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:12,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:09:12,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:12,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:09:12,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:09:12,259 INFO L87 Difference]: Start difference. First operand 798 states and 1141 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 01:09:12,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:12,315 INFO L93 Difference]: Finished difference Result 1466 states and 2136 transitions. [2022-01-10 01:09:12,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:09:12,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 84 [2022-01-10 01:09:12,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:12,318 INFO L225 Difference]: With dead ends: 1466 [2022-01-10 01:09:12,318 INFO L226 Difference]: Without dead ends: 818 [2022-01-10 01:09:12,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:12,321 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 6 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:12,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 858 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:12,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-01-10 01:09:12,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2022-01-10 01:09:12,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 648 states have (on average 1.4027777777777777) internal successors, (909), 651 states have internal predecessors, (909), 124 states have call successors, (124), 45 states have call predecessors, (124), 45 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-01-10 01:09:12,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1157 transitions. [2022-01-10 01:09:12,375 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1157 transitions. Word has length 84 [2022-01-10 01:09:12,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:12,375 INFO L470 AbstractCegarLoop]: Abstraction has 818 states and 1157 transitions. [2022-01-10 01:09:12,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 01:09:12,375 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1157 transitions. [2022-01-10 01:09:12,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 01:09:12,376 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:12,376 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:12,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 01:09:12,376 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:12,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:12,377 INFO L85 PathProgramCache]: Analyzing trace with hash -115565173, now seen corresponding path program 1 times [2022-01-10 01:09:12,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:12,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980829597] [2022-01-10 01:09:12,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:12,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 01:09:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:09:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,424 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:09:12,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:12,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980829597] [2022-01-10 01:09:12,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980829597] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:12,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:12,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:09:12,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766716966] [2022-01-10 01:09:12,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:12,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:09:12,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:12,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:09:12,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:09:12,425 INFO L87 Difference]: Start difference. First operand 818 states and 1157 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 01:09:12,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:12,478 INFO L93 Difference]: Finished difference Result 1502 states and 2152 transitions. [2022-01-10 01:09:12,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:09:12,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 92 [2022-01-10 01:09:12,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:12,482 INFO L225 Difference]: With dead ends: 1502 [2022-01-10 01:09:12,482 INFO L226 Difference]: Without dead ends: 834 [2022-01-10 01:09:12,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:12,484 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 5 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:12,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 867 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:12,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-01-10 01:09:12,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 834. [2022-01-10 01:09:12,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 660 states have (on average 1.3954545454545455) internal successors, (921), 663 states have internal predecessors, (921), 124 states have call successors, (124), 49 states have call predecessors, (124), 49 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-01-10 01:09:12,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1169 transitions. [2022-01-10 01:09:12,521 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1169 transitions. Word has length 92 [2022-01-10 01:09:12,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:12,521 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 1169 transitions. [2022-01-10 01:09:12,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 01:09:12,521 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1169 transitions. [2022-01-10 01:09:12,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 01:09:12,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:12,522 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:12,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 01:09:12,522 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:12,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:12,523 INFO L85 PathProgramCache]: Analyzing trace with hash -2014073166, now seen corresponding path program 1 times [2022-01-10 01:09:12,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:12,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911601187] [2022-01-10 01:09:12,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:12,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 01:09:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:09:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:09:12,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:12,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911601187] [2022-01-10 01:09:12,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911601187] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:12,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:12,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:09:12,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040664291] [2022-01-10 01:09:12,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:12,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:09:12,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:12,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:09:12,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:09:12,579 INFO L87 Difference]: Start difference. First operand 834 states and 1169 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 01:09:12,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:12,650 INFO L93 Difference]: Finished difference Result 1538 states and 2192 transitions. [2022-01-10 01:09:12,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:09:12,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 92 [2022-01-10 01:09:12,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:12,653 INFO L225 Difference]: With dead ends: 1538 [2022-01-10 01:09:12,654 INFO L226 Difference]: Without dead ends: 854 [2022-01-10 01:09:12,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:12,655 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 6 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:12,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 858 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:12,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-01-10 01:09:12,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 854. [2022-01-10 01:09:12,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 676 states have (on average 1.386094674556213) internal successors, (937), 679 states have internal predecessors, (937), 124 states have call successors, (124), 53 states have call predecessors, (124), 53 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-01-10 01:09:12,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1185 transitions. [2022-01-10 01:09:12,699 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1185 transitions. Word has length 92 [2022-01-10 01:09:12,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:12,699 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1185 transitions. [2022-01-10 01:09:12,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 01:09:12,699 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1185 transitions. [2022-01-10 01:09:12,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 01:09:12,700 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:12,700 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:12,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 01:09:12,701 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:12,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:12,701 INFO L85 PathProgramCache]: Analyzing trace with hash -794519374, now seen corresponding path program 1 times [2022-01-10 01:09:12,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:12,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114761714] [2022-01-10 01:09:12,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:12,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 01:09:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:09:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-10 01:09:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,776 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 01:09:12,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:12,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114761714] [2022-01-10 01:09:12,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114761714] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:12,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:12,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:09:12,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110680852] [2022-01-10 01:09:12,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:12,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:09:12,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:12,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:09:12,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:09:12,777 INFO L87 Difference]: Start difference. First operand 854 states and 1185 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-01-10 01:09:12,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:12,838 INFO L93 Difference]: Finished difference Result 1582 states and 2220 transitions. [2022-01-10 01:09:12,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:09:12,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 100 [2022-01-10 01:09:12,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:12,843 INFO L225 Difference]: With dead ends: 1582 [2022-01-10 01:09:12,843 INFO L226 Difference]: Without dead ends: 878 [2022-01-10 01:09:12,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:12,845 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 7 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:12,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 869 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:12,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-01-10 01:09:12,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2022-01-10 01:09:12,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 696 states have (on average 1.375) internal successors, (957), 699 states have internal predecessors, (957), 124 states have call successors, (124), 57 states have call predecessors, (124), 57 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-01-10 01:09:12,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1205 transitions. [2022-01-10 01:09:12,885 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1205 transitions. Word has length 100 [2022-01-10 01:09:12,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:12,885 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1205 transitions. [2022-01-10 01:09:12,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-01-10 01:09:12,885 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1205 transitions. [2022-01-10 01:09:12,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 01:09:12,887 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:12,887 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:12,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 01:09:12,887 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:12,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:12,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1401758325, now seen corresponding path program 1 times [2022-01-10 01:09:12,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:12,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141260072] [2022-01-10 01:09:12,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:12,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 01:09:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:09:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-10 01:09:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-10 01:09:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:12,974 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 01:09:12,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:12,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141260072] [2022-01-10 01:09:12,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141260072] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:12,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:12,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:09:12,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951055663] [2022-01-10 01:09:12,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:12,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:09:12,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:12,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:09:12,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:09:12,975 INFO L87 Difference]: Start difference. First operand 878 states and 1205 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 01:09:13,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:13,206 INFO L93 Difference]: Finished difference Result 2499 states and 3487 transitions. [2022-01-10 01:09:13,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:09:13,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 103 [2022-01-10 01:09:13,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:13,212 INFO L225 Difference]: With dead ends: 2499 [2022-01-10 01:09:13,212 INFO L226 Difference]: Without dead ends: 1771 [2022-01-10 01:09:13,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-10 01:09:13,214 INFO L933 BasicCegarLoop]: 419 mSDtfsCounter, 395 mSDsluCounter, 1893 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 2312 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:13,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 2312 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:09:13,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2022-01-10 01:09:13,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1162. [2022-01-10 01:09:13,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 907 states have (on average 1.3660418963616316) internal successors, (1239), 912 states have internal predecessors, (1239), 172 states have call successors, (172), 82 states have call predecessors, (172), 82 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2022-01-10 01:09:13,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1583 transitions. [2022-01-10 01:09:13,275 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1583 transitions. Word has length 103 [2022-01-10 01:09:13,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:13,276 INFO L470 AbstractCegarLoop]: Abstraction has 1162 states and 1583 transitions. [2022-01-10 01:09:13,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 01:09:13,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1583 transitions. [2022-01-10 01:09:13,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 01:09:13,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:13,277 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:13,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 01:09:13,277 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:13,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:13,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1324741963, now seen corresponding path program 1 times [2022-01-10 01:09:13,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:13,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506183036] [2022-01-10 01:09:13,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:13,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 01:09:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:09:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-10 01:09:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-10 01:09:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,327 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 01:09:13,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:13,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506183036] [2022-01-10 01:09:13,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506183036] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:13,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:13,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:09:13,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283439947] [2022-01-10 01:09:13,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:13,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:09:13,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:13,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:09:13,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:09:13,328 INFO L87 Difference]: Start difference. First operand 1162 states and 1583 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 01:09:13,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:13,392 INFO L93 Difference]: Finished difference Result 2130 states and 2928 transitions. [2022-01-10 01:09:13,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:09:13,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 107 [2022-01-10 01:09:13,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:13,396 INFO L225 Difference]: With dead ends: 2130 [2022-01-10 01:09:13,396 INFO L226 Difference]: Without dead ends: 1186 [2022-01-10 01:09:13,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:13,398 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 5 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:13,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 867 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:13,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-01-10 01:09:13,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1186. [2022-01-10 01:09:13,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 925 states have (on average 1.358918918918919) internal successors, (1257), 930 states have internal predecessors, (1257), 172 states have call successors, (172), 88 states have call predecessors, (172), 88 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2022-01-10 01:09:13,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1601 transitions. [2022-01-10 01:09:13,477 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1601 transitions. Word has length 107 [2022-01-10 01:09:13,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:13,477 INFO L470 AbstractCegarLoop]: Abstraction has 1186 states and 1601 transitions. [2022-01-10 01:09:13,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 01:09:13,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1601 transitions. [2022-01-10 01:09:13,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 01:09:13,478 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:13,478 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:13,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 01:09:13,479 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:13,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:13,479 INFO L85 PathProgramCache]: Analyzing trace with hash 682815691, now seen corresponding path program 1 times [2022-01-10 01:09:13,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:13,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865426931] [2022-01-10 01:09:13,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:13,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 01:09:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:09:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-10 01:09:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-10 01:09:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,567 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 01:09:13,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:13,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865426931] [2022-01-10 01:09:13,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865426931] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:13,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:13,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:09:13,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432695811] [2022-01-10 01:09:13,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:13,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:09:13,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:13,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:09:13,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:09:13,570 INFO L87 Difference]: Start difference. First operand 1186 states and 1601 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 01:09:13,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:13,685 INFO L93 Difference]: Finished difference Result 1659 states and 2347 transitions. [2022-01-10 01:09:13,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 01:09:13,685 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 106 [2022-01-10 01:09:13,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:13,692 INFO L225 Difference]: With dead ends: 1659 [2022-01-10 01:09:13,692 INFO L226 Difference]: Without dead ends: 1657 [2022-01-10 01:09:13,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:09:13,694 INFO L933 BasicCegarLoop]: 517 mSDtfsCounter, 263 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 2263 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:13,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 2263 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:13,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2022-01-10 01:09:13,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1194. [2022-01-10 01:09:13,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 929 states have (on average 1.3573735199138859) internal successors, (1261), 936 states have internal predecessors, (1261), 174 states have call successors, (174), 90 states have call predecessors, (174), 90 states have return successors, (174), 167 states have call predecessors, (174), 174 states have call successors, (174) [2022-01-10 01:09:13,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1609 transitions. [2022-01-10 01:09:13,768 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1609 transitions. Word has length 106 [2022-01-10 01:09:13,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:13,769 INFO L470 AbstractCegarLoop]: Abstraction has 1194 states and 1609 transitions. [2022-01-10 01:09:13,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 01:09:13,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1609 transitions. [2022-01-10 01:09:13,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-10 01:09:13,770 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:13,770 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:13,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 01:09:13,770 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:13,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:13,770 INFO L85 PathProgramCache]: Analyzing trace with hash -614162587, now seen corresponding path program 1 times [2022-01-10 01:09:13,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:13,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385306240] [2022-01-10 01:09:13,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:13,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 01:09:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:09:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-10 01:09:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-10 01:09:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:13,854 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-10 01:09:13,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:13,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385306240] [2022-01-10 01:09:13,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385306240] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:13,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:13,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:09:13,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148625263] [2022-01-10 01:09:13,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:13,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:09:13,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:13,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:09:13,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:09:13,856 INFO L87 Difference]: Start difference. First operand 1194 states and 1609 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 01:09:14,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:14,047 INFO L93 Difference]: Finished difference Result 2456 states and 3370 transitions. [2022-01-10 01:09:14,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:09:14,047 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 109 [2022-01-10 01:09:14,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:14,052 INFO L225 Difference]: With dead ends: 2456 [2022-01-10 01:09:14,052 INFO L226 Difference]: Without dead ends: 1562 [2022-01-10 01:09:14,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-10 01:09:14,055 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 527 mSDsluCounter, 1863 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 2275 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:14,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 2275 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:09:14,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2022-01-10 01:09:14,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1240. [2022-01-10 01:09:14,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 986 states have (on average 1.3468559837728196) internal successors, (1328), 998 states have internal predecessors, (1328), 162 states have call successors, (162), 91 states have call predecessors, (162), 91 states have return successors, (162), 150 states have call predecessors, (162), 162 states have call successors, (162) [2022-01-10 01:09:14,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1652 transitions. [2022-01-10 01:09:14,127 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1652 transitions. Word has length 109 [2022-01-10 01:09:14,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:14,127 INFO L470 AbstractCegarLoop]: Abstraction has 1240 states and 1652 transitions. [2022-01-10 01:09:14,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 01:09:14,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1652 transitions. [2022-01-10 01:09:14,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 01:09:14,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:14,129 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:14,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 01:09:14,129 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:14,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:14,129 INFO L85 PathProgramCache]: Analyzing trace with hash 326540891, now seen corresponding path program 1 times [2022-01-10 01:09:14,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:14,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561749021] [2022-01-10 01:09:14,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:14,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 01:09:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:09:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-10 01:09:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-10 01:09:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-10 01:09:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,246 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 01:09:14,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:14,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561749021] [2022-01-10 01:09:14,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561749021] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:14,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:14,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:09:14,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928738173] [2022-01-10 01:09:14,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:14,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:09:14,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:14,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:09:14,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:09:14,247 INFO L87 Difference]: Start difference. First operand 1240 states and 1652 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 01:09:14,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:14,463 INFO L93 Difference]: Finished difference Result 2550 states and 3481 transitions. [2022-01-10 01:09:14,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:09:14,464 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 111 [2022-01-10 01:09:14,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:14,469 INFO L225 Difference]: With dead ends: 2550 [2022-01-10 01:09:14,469 INFO L226 Difference]: Without dead ends: 1590 [2022-01-10 01:09:14,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-10 01:09:14,471 INFO L933 BasicCegarLoop]: 442 mSDtfsCounter, 399 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:14,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 2425 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:09:14,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2022-01-10 01:09:14,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1126. [2022-01-10 01:09:14,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 899 states have (on average 1.3481646273637375) internal successors, (1212), 909 states have internal predecessors, (1212), 145 states have call successors, (145), 81 states have call predecessors, (145), 81 states have return successors, (145), 135 states have call predecessors, (145), 145 states have call successors, (145) [2022-01-10 01:09:14,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1502 transitions. [2022-01-10 01:09:14,541 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1502 transitions. Word has length 111 [2022-01-10 01:09:14,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:14,542 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 1502 transitions. [2022-01-10 01:09:14,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 01:09:14,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1502 transitions. [2022-01-10 01:09:14,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 01:09:14,543 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:14,543 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:14,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 01:09:14,543 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:14,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:14,543 INFO L85 PathProgramCache]: Analyzing trace with hash 2059853897, now seen corresponding path program 1 times [2022-01-10 01:09:14,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:14,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406013576] [2022-01-10 01:09:14,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:14,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 01:09:14,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:09:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-10 01:09:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-10 01:09:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 01:09:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:14,666 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 01:09:14,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:14,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406013576] [2022-01-10 01:09:14,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406013576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:14,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:14,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:09:14,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573603949] [2022-01-10 01:09:14,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:14,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:09:14,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:14,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:09:14,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:09:14,669 INFO L87 Difference]: Start difference. First operand 1126 states and 1502 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 01:09:15,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:15,279 INFO L93 Difference]: Finished difference Result 2621 states and 3588 transitions. [2022-01-10 01:09:15,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 01:09:15,280 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 112 [2022-01-10 01:09:15,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:15,286 INFO L225 Difference]: With dead ends: 2621 [2022-01-10 01:09:15,286 INFO L226 Difference]: Without dead ends: 1695 [2022-01-10 01:09:15,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-01-10 01:09:15,288 INFO L933 BasicCegarLoop]: 509 mSDtfsCounter, 930 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 2165 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:15,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [936 Valid, 2165 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 01:09:15,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2022-01-10 01:09:15,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1142. [2022-01-10 01:09:15,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 907 states have (on average 1.328555678059537) internal successors, (1205), 918 states have internal predecessors, (1205), 148 states have call successors, (148), 86 states have call predecessors, (148), 86 states have return successors, (148), 137 states have call predecessors, (148), 148 states have call successors, (148) [2022-01-10 01:09:15,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1501 transitions. [2022-01-10 01:09:15,367 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1501 transitions. Word has length 112 [2022-01-10 01:09:15,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:15,367 INFO L470 AbstractCegarLoop]: Abstraction has 1142 states and 1501 transitions. [2022-01-10 01:09:15,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 01:09:15,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1501 transitions. [2022-01-10 01:09:15,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 01:09:15,368 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:15,368 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:15,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 01:09:15,368 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:15,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:15,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1941201166, now seen corresponding path program 1 times [2022-01-10 01:09:15,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:15,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575158969] [2022-01-10 01:09:15,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:15,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 01:09:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 01:09:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:09:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-10 01:09:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-10 01:09:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 01:09:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,417 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:09:15,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:15,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575158969] [2022-01-10 01:09:15,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575158969] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:15,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:15,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:09:15,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310214642] [2022-01-10 01:09:15,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:15,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:09:15,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:15,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:09:15,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:09:15,418 INFO L87 Difference]: Start difference. First operand 1142 states and 1501 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:15,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:15,677 INFO L93 Difference]: Finished difference Result 3187 states and 4275 transitions. [2022-01-10 01:09:15,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:09:15,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 112 [2022-01-10 01:09:15,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:15,685 INFO L225 Difference]: With dead ends: 3187 [2022-01-10 01:09:15,685 INFO L226 Difference]: Without dead ends: 2296 [2022-01-10 01:09:15,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:15,688 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 440 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:15,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 1227 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:09:15,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2022-01-10 01:09:15,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 1939. [2022-01-10 01:09:15,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1939 states, 1514 states have (on average 1.3262879788639366) internal successors, (2008), 1533 states have internal predecessors, (2008), 272 states have call successors, (272), 152 states have call predecessors, (272), 152 states have return successors, (272), 253 states have call predecessors, (272), 272 states have call successors, (272) [2022-01-10 01:09:15,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 2552 transitions. [2022-01-10 01:09:15,825 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 2552 transitions. Word has length 112 [2022-01-10 01:09:15,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:15,825 INFO L470 AbstractCegarLoop]: Abstraction has 1939 states and 2552 transitions. [2022-01-10 01:09:15,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:15,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 2552 transitions. [2022-01-10 01:09:15,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 01:09:15,826 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:15,826 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:15,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 01:09:15,827 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:15,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:15,827 INFO L85 PathProgramCache]: Analyzing trace with hash -2103041469, now seen corresponding path program 1 times [2022-01-10 01:09:15,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:15,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298411141] [2022-01-10 01:09:15,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:15,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 01:09:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 01:09:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:09:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-10 01:09:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-10 01:09:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 01:09:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:15,948 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 01:09:15,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:15,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298411141] [2022-01-10 01:09:15,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298411141] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:15,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:15,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:09:15,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201377675] [2022-01-10 01:09:15,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:15,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:09:15,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:15,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:09:15,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:09:15,950 INFO L87 Difference]: Start difference. First operand 1939 states and 2552 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:16,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:16,550 INFO L93 Difference]: Finished difference Result 4400 states and 5932 transitions. [2022-01-10 01:09:16,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 01:09:16,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 114 [2022-01-10 01:09:16,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:16,560 INFO L225 Difference]: With dead ends: 4400 [2022-01-10 01:09:16,560 INFO L226 Difference]: Without dead ends: 2810 [2022-01-10 01:09:16,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-01-10 01:09:16,563 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 806 mSDsluCounter, 1940 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 2518 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:16,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 2518 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 01:09:16,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2022-01-10 01:09:16,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1958. [2022-01-10 01:09:16,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1958 states, 1520 states have (on average 1.3223684210526316) internal successors, (2010), 1540 states have internal predecessors, (2010), 280 states have call successors, (280), 157 states have call predecessors, (280), 157 states have return successors, (280), 260 states have call predecessors, (280), 280 states have call successors, (280) [2022-01-10 01:09:16,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 2570 transitions. [2022-01-10 01:09:16,778 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 2570 transitions. Word has length 114 [2022-01-10 01:09:16,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:16,779 INFO L470 AbstractCegarLoop]: Abstraction has 1958 states and 2570 transitions. [2022-01-10 01:09:16,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:16,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 2570 transitions. [2022-01-10 01:09:16,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 01:09:16,781 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:16,781 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:16,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 01:09:16,781 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:16,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:16,781 INFO L85 PathProgramCache]: Analyzing trace with hash 985009634, now seen corresponding path program 1 times [2022-01-10 01:09:16,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:16,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121477069] [2022-01-10 01:09:16,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:16,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:16,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:16,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-10 01:09:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:16,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-10 01:09:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:16,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 01:09:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:16,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:09:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:16,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-10 01:09:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:16,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-10 01:09:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:16,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-10 01:09:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:16,843 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:09:16,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:16,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121477069] [2022-01-10 01:09:16,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121477069] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:16,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:16,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:09:16,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588353659] [2022-01-10 01:09:16,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:16,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:09:16,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:16,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:09:16,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:09:16,845 INFO L87 Difference]: Start difference. First operand 1958 states and 2570 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:17,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:17,263 INFO L93 Difference]: Finished difference Result 5168 states and 6863 transitions. [2022-01-10 01:09:17,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:09:17,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 115 [2022-01-10 01:09:17,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:17,307 INFO L225 Difference]: With dead ends: 5168 [2022-01-10 01:09:17,308 INFO L226 Difference]: Without dead ends: 3594 [2022-01-10 01:09:17,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:17,313 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 487 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:17,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 1291 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:09:17,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3594 states. [2022-01-10 01:09:17,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3594 to 3019. [2022-01-10 01:09:17,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3019 states, 2306 states have (on average 1.318733738074588) internal successors, (3041), 2337 states have internal predecessors, (3041), 460 states have call successors, (460), 252 states have call predecessors, (460), 252 states have return successors, (460), 429 states have call predecessors, (460), 460 states have call successors, (460) [2022-01-10 01:09:17,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3019 states to 3019 states and 3961 transitions. [2022-01-10 01:09:17,657 INFO L78 Accepts]: Start accepts. Automaton has 3019 states and 3961 transitions. Word has length 115 [2022-01-10 01:09:17,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:17,657 INFO L470 AbstractCegarLoop]: Abstraction has 3019 states and 3961 transitions. [2022-01-10 01:09:17,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:17,657 INFO L276 IsEmpty]: Start isEmpty. Operand 3019 states and 3961 transitions. [2022-01-10 01:09:17,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 01:09:17,660 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:17,660 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:17,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 01:09:17,660 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:17,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:17,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1237817774, now seen corresponding path program 1 times [2022-01-10 01:09:17,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:17,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572891739] [2022-01-10 01:09:17,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:17,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:17,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:17,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-10 01:09:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:17,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-10 01:09:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:17,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-10 01:09:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:17,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 01:09:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:17,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 01:09:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:17,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-10 01:09:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:17,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-10 01:09:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:17,712 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:09:17,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:17,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572891739] [2022-01-10 01:09:17,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572891739] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:17,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:17,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:09:17,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650722093] [2022-01-10 01:09:17,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:17,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:09:17,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:17,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:09:17,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:09:17,714 INFO L87 Difference]: Start difference. First operand 3019 states and 3961 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:18,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:18,144 INFO L93 Difference]: Finished difference Result 7140 states and 9437 transitions. [2022-01-10 01:09:18,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:09:18,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 115 [2022-01-10 01:09:18,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:18,156 INFO L225 Difference]: With dead ends: 7140 [2022-01-10 01:09:18,156 INFO L226 Difference]: Without dead ends: 4635 [2022-01-10 01:09:18,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:18,166 INFO L933 BasicCegarLoop]: 551 mSDtfsCounter, 434 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:18,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 1288 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:09:18,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4635 states. [2022-01-10 01:09:18,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4635 to 4297. [2022-01-10 01:09:18,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4297 states, 3260 states have (on average 1.316564417177914) internal successors, (4292), 3304 states have internal predecessors, (4292), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2022-01-10 01:09:18,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4297 states to 4297 states and 5636 transitions. [2022-01-10 01:09:18,514 INFO L78 Accepts]: Start accepts. Automaton has 4297 states and 5636 transitions. Word has length 115 [2022-01-10 01:09:18,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:18,514 INFO L470 AbstractCegarLoop]: Abstraction has 4297 states and 5636 transitions. [2022-01-10 01:09:18,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:18,514 INFO L276 IsEmpty]: Start isEmpty. Operand 4297 states and 5636 transitions. [2022-01-10 01:09:18,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-10 01:09:18,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:18,516 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:18,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 01:09:18,516 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:18,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:18,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1950956728, now seen corresponding path program 1 times [2022-01-10 01:09:18,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:18,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324786503] [2022-01-10 01:09:18,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:18,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:18,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:18,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-10 01:09:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:18,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-10 01:09:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:18,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-10 01:09:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:18,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-10 01:09:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:18,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 01:09:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:18,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-10 01:09:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:18,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-10 01:09:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:18,567 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:09:18,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:18,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324786503] [2022-01-10 01:09:18,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324786503] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:18,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:18,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:09:18,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051920775] [2022-01-10 01:09:18,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:18,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:09:18,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:18,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:09:18,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:09:18,569 INFO L87 Difference]: Start difference. First operand 4297 states and 5636 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:19,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:19,170 INFO L93 Difference]: Finished difference Result 9720 states and 13194 transitions. [2022-01-10 01:09:19,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:09:19,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 116 [2022-01-10 01:09:19,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:19,186 INFO L225 Difference]: With dead ends: 9720 [2022-01-10 01:09:19,186 INFO L226 Difference]: Without dead ends: 5828 [2022-01-10 01:09:19,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:09:19,197 INFO L933 BasicCegarLoop]: 458 mSDtfsCounter, 152 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:19,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 705 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:09:19,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5828 states. [2022-01-10 01:09:19,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5828 to 4303. [2022-01-10 01:09:19,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4303 states, 3266 states have (on average 1.3159828536436007) internal successors, (4298), 3310 states have internal predecessors, (4298), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2022-01-10 01:09:19,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4303 states to 4303 states and 5642 transitions. [2022-01-10 01:09:19,560 INFO L78 Accepts]: Start accepts. Automaton has 4303 states and 5642 transitions. Word has length 116 [2022-01-10 01:09:19,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:19,561 INFO L470 AbstractCegarLoop]: Abstraction has 4303 states and 5642 transitions. [2022-01-10 01:09:19,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:19,561 INFO L276 IsEmpty]: Start isEmpty. Operand 4303 states and 5642 transitions. [2022-01-10 01:09:19,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 01:09:19,562 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:19,562 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:19,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 01:09:19,563 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:19,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:19,563 INFO L85 PathProgramCache]: Analyzing trace with hash -2025473139, now seen corresponding path program 1 times [2022-01-10 01:09:19,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:19,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575008081] [2022-01-10 01:09:19,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:19,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:19,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:19,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-10 01:09:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:19,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-10 01:09:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:19,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-10 01:09:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:19,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 01:09:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:19,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 01:09:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:19,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-10 01:09:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:19,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-10 01:09:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:19,617 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:09:19,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:19,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575008081] [2022-01-10 01:09:19,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575008081] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:19,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:19,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:09:19,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110210135] [2022-01-10 01:09:19,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:19,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:09:19,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:19,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:09:19,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:09:19,618 INFO L87 Difference]: Start difference. First operand 4303 states and 5642 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:19,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:19,979 INFO L93 Difference]: Finished difference Result 9016 states and 12080 transitions. [2022-01-10 01:09:19,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:09:19,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 117 [2022-01-10 01:09:19,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:19,992 INFO L225 Difference]: With dead ends: 9016 [2022-01-10 01:09:19,992 INFO L226 Difference]: Without dead ends: 4810 [2022-01-10 01:09:19,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:20,000 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 370 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:20,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 885 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:20,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2022-01-10 01:09:20,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 3870. [2022-01-10 01:09:20,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3870 states, 2916 states have (on average 1.3223593964334706) internal successors, (3856), 2950 states have internal predecessors, (3856), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2022-01-10 01:09:20,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3870 states to 3870 states and 5096 transitions. [2022-01-10 01:09:20,319 INFO L78 Accepts]: Start accepts. Automaton has 3870 states and 5096 transitions. Word has length 117 [2022-01-10 01:09:20,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:20,319 INFO L470 AbstractCegarLoop]: Abstraction has 3870 states and 5096 transitions. [2022-01-10 01:09:20,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:20,319 INFO L276 IsEmpty]: Start isEmpty. Operand 3870 states and 5096 transitions. [2022-01-10 01:09:20,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 01:09:20,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:20,320 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:20,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 01:09:20,321 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:20,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:20,321 INFO L85 PathProgramCache]: Analyzing trace with hash 183157843, now seen corresponding path program 1 times [2022-01-10 01:09:20,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:20,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352766987] [2022-01-10 01:09:20,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:20,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:20,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:20,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:20,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-10 01:09:20,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:20,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-10 01:09:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:20,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-10 01:09:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:20,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-10 01:09:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:20,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 01:09:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:20,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-10 01:09:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:20,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-10 01:09:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:20,363 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:09:20,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:20,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352766987] [2022-01-10 01:09:20,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352766987] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:20,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:20,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:09:20,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258743898] [2022-01-10 01:09:20,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:20,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:09:20,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:20,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:09:20,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:09:20,367 INFO L87 Difference]: Start difference. First operand 3870 states and 5096 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:20,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:20,845 INFO L93 Difference]: Finished difference Result 8518 states and 11512 transitions. [2022-01-10 01:09:20,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:09:20,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 118 [2022-01-10 01:09:20,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:20,857 INFO L225 Difference]: With dead ends: 8518 [2022-01-10 01:09:20,857 INFO L226 Difference]: Without dead ends: 4861 [2022-01-10 01:09:20,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:09:20,864 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 152 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:20,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 681 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:09:20,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4861 states. [2022-01-10 01:09:21,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4861 to 3880. [2022-01-10 01:09:21,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3880 states, 2926 states have (on average 1.3212576896787422) internal successors, (3866), 2960 states have internal predecessors, (3866), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2022-01-10 01:09:21,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3880 states to 3880 states and 5106 transitions. [2022-01-10 01:09:21,190 INFO L78 Accepts]: Start accepts. Automaton has 3880 states and 5106 transitions. Word has length 118 [2022-01-10 01:09:21,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:21,190 INFO L470 AbstractCegarLoop]: Abstraction has 3880 states and 5106 transitions. [2022-01-10 01:09:21,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:21,190 INFO L276 IsEmpty]: Start isEmpty. Operand 3880 states and 5106 transitions. [2022-01-10 01:09:21,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 01:09:21,191 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:21,192 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:21,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 01:09:21,192 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:21,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:21,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1515793806, now seen corresponding path program 1 times [2022-01-10 01:09:21,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:21,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719662439] [2022-01-10 01:09:21,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:21,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:21,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:21,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-10 01:09:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:21,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-10 01:09:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:21,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-10 01:09:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:21,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-10 01:09:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:21,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 01:09:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:21,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-10 01:09:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:21,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-10 01:09:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:21,257 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:09:21,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:21,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719662439] [2022-01-10 01:09:21,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719662439] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:21,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:21,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:09:21,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175874986] [2022-01-10 01:09:21,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:21,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:09:21,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:21,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:09:21,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:09:21,258 INFO L87 Difference]: Start difference. First operand 3880 states and 5106 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:21,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:21,724 INFO L93 Difference]: Finished difference Result 8465 states and 11428 transitions. [2022-01-10 01:09:21,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:09:21,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 118 [2022-01-10 01:09:21,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:21,735 INFO L225 Difference]: With dead ends: 8465 [2022-01-10 01:09:21,736 INFO L226 Difference]: Without dead ends: 4731 [2022-01-10 01:09:21,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:21,743 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 285 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:21,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 916 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:21,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4731 states. [2022-01-10 01:09:21,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4731 to 2927. [2022-01-10 01:09:21,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2927 states, 2207 states have (on average 1.313094698685999) internal successors, (2898), 2226 states have internal predecessors, (2898), 469 states have call successors, (469), 250 states have call predecessors, (469), 250 states have return successors, (469), 450 states have call predecessors, (469), 469 states have call successors, (469) [2022-01-10 01:09:21,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 3836 transitions. [2022-01-10 01:09:21,999 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 3836 transitions. Word has length 118 [2022-01-10 01:09:21,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:21,999 INFO L470 AbstractCegarLoop]: Abstraction has 2927 states and 3836 transitions. [2022-01-10 01:09:21,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 01:09:21,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 3836 transitions. [2022-01-10 01:09:22,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-01-10 01:09:22,003 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:22,003 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:22,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 01:09:22,003 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:22,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:22,003 INFO L85 PathProgramCache]: Analyzing trace with hash -402462666, now seen corresponding path program 1 times [2022-01-10 01:09:22,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:22,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155886180] [2022-01-10 01:09:22,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:22,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:22,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:22,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-10 01:09:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:22,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:22,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 01:09:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:22,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:09:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:22,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-10 01:09:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:22,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-10 01:09:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:22,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-10 01:09:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:22,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-10 01:09:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:22,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-10 01:09:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:22,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-10 01:09:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:22,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-10 01:09:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:22,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-10 01:09:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:22,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-10 01:09:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:22,111 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 16 proven. 28 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-01-10 01:09:22,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:22,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155886180] [2022-01-10 01:09:22,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155886180] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:09:22,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016221512] [2022-01-10 01:09:22,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:22,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:09:22,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:09:22,128 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 01:09:22,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 01:09:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:22,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 01:09:22,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:09:22,693 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 77 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-10 01:09:22,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:09:23,011 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-01-10 01:09:23,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016221512] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 01:09:23,011 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 01:09:23,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-01-10 01:09:23,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405875623] [2022-01-10 01:09:23,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 01:09:23,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 01:09:23,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:23,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 01:09:23,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-10 01:09:23,013 INFO L87 Difference]: Start difference. First operand 2927 states and 3836 transitions. Second operand has 14 states, 14 states have (on average 18.857142857142858) internal successors, (264), 13 states have internal predecessors, (264), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-01-10 01:09:25,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:25,995 INFO L93 Difference]: Finished difference Result 10002 states and 14000 transitions. [2022-01-10 01:09:25,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-10 01:09:25,996 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 18.857142857142858) internal successors, (264), 13 states have internal predecessors, (264), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) Word has length 186 [2022-01-10 01:09:25,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:26,013 INFO L225 Difference]: With dead ends: 10002 [2022-01-10 01:09:26,013 INFO L226 Difference]: Without dead ends: 7362 [2022-01-10 01:09:26,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 404 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1358 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=749, Invalid=3411, Unknown=0, NotChecked=0, Total=4160 [2022-01-10 01:09:26,020 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 4481 mSDsluCounter, 2949 mSDsCounter, 0 mSdLazyCounter, 2038 mSolverCounterSat, 1308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4481 SdHoareTripleChecker+Valid, 3286 SdHoareTripleChecker+Invalid, 3346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1308 IncrementalHoareTripleChecker+Valid, 2038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:26,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4481 Valid, 3286 Invalid, 3346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1308 Valid, 2038 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 01:09:26,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7362 states. [2022-01-10 01:09:26,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7362 to 3451. [2022-01-10 01:09:26,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3451 states, 2624 states have (on average 1.3090701219512195) internal successors, (3435), 2644 states have internal predecessors, (3435), 531 states have call successors, (531), 295 states have call predecessors, (531), 295 states have return successors, (531), 511 states have call predecessors, (531), 531 states have call successors, (531) [2022-01-10 01:09:26,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3451 states to 3451 states and 4497 transitions. [2022-01-10 01:09:26,366 INFO L78 Accepts]: Start accepts. Automaton has 3451 states and 4497 transitions. Word has length 186 [2022-01-10 01:09:26,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:26,366 INFO L470 AbstractCegarLoop]: Abstraction has 3451 states and 4497 transitions. [2022-01-10 01:09:26,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.857142857142858) internal successors, (264), 13 states have internal predecessors, (264), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-01-10 01:09:26,367 INFO L276 IsEmpty]: Start isEmpty. Operand 3451 states and 4497 transitions. [2022-01-10 01:09:26,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-01-10 01:09:26,371 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:26,371 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:26,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 01:09:26,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-10 01:09:26,587 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:26,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:26,587 INFO L85 PathProgramCache]: Analyzing trace with hash 141381451, now seen corresponding path program 1 times [2022-01-10 01:09:26,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:26,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759256708] [2022-01-10 01:09:26,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:26,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 01:09:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:09:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 01:09:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:09:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-10 01:09:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-10 01:09:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-10 01:09:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-10 01:09:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-10 01:09:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-10 01:09:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-10 01:09:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-10 01:09:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-10 01:09:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-10 01:09:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,721 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 16 proven. 23 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-01-10 01:09:26,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:26,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759256708] [2022-01-10 01:09:26,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759256708] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:09:26,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115421006] [2022-01-10 01:09:26,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:26,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:09:26,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:09:26,735 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 01:09:26,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 01:09:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:26,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 01:09:26,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:09:27,197 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 36 proven. 53 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 01:09:27,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:09:27,531 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-01-10 01:09:27,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115421006] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 01:09:27,531 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 01:09:27,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-01-10 01:09:27,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251652380] [2022-01-10 01:09:27,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 01:09:27,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 01:09:27,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:27,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 01:09:27,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:09:27,534 INFO L87 Difference]: Start difference. First operand 3451 states and 4497 transitions. Second operand has 16 states, 16 states have (on average 16.625) internal successors, (266), 14 states have internal predecessors, (266), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) [2022-01-10 01:09:34,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:34,742 INFO L93 Difference]: Finished difference Result 17532 states and 23957 transitions. [2022-01-10 01:09:34,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-01-10 01:09:34,743 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 16.625) internal successors, (266), 14 states have internal predecessors, (266), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) Word has length 194 [2022-01-10 01:09:34,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:34,783 INFO L225 Difference]: With dead ends: 17532 [2022-01-10 01:09:34,783 INFO L226 Difference]: Without dead ends: 14377 [2022-01-10 01:09:34,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 476 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5045 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1835, Invalid=12207, Unknown=0, NotChecked=0, Total=14042 [2022-01-10 01:09:34,792 INFO L933 BasicCegarLoop]: 1832 mSDtfsCounter, 5889 mSDsluCounter, 13834 mSDsCounter, 0 mSdLazyCounter, 5456 mSolverCounterSat, 3535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5889 SdHoareTripleChecker+Valid, 15666 SdHoareTripleChecker+Invalid, 8991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3535 IncrementalHoareTripleChecker+Valid, 5456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:34,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5889 Valid, 15666 Invalid, 8991 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3535 Valid, 5456 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-01-10 01:09:34,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14377 states. [2022-01-10 01:09:35,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14377 to 6318. [2022-01-10 01:09:35,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6318 states, 4774 states have (on average 1.3112693757855047) internal successors, (6260), 4812 states have internal predecessors, (6260), 992 states have call successors, (992), 551 states have call predecessors, (992), 551 states have return successors, (992), 954 states have call predecessors, (992), 992 states have call successors, (992) [2022-01-10 01:09:35,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6318 states to 6318 states and 8244 transitions. [2022-01-10 01:09:35,488 INFO L78 Accepts]: Start accepts. Automaton has 6318 states and 8244 transitions. Word has length 194 [2022-01-10 01:09:35,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:35,489 INFO L470 AbstractCegarLoop]: Abstraction has 6318 states and 8244 transitions. [2022-01-10 01:09:35,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.625) internal successors, (266), 14 states have internal predecessors, (266), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) [2022-01-10 01:09:35,489 INFO L276 IsEmpty]: Start isEmpty. Operand 6318 states and 8244 transitions. [2022-01-10 01:09:35,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-01-10 01:09:35,497 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:35,497 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:35,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-10 01:09:35,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-10 01:09:35,713 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:35,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:35,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1389154626, now seen corresponding path program 1 times [2022-01-10 01:09:35,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:35,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956273958] [2022-01-10 01:09:35,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:35,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 01:09:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-10 01:09:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 01:09:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:09:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-10 01:09:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-10 01:09:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-10 01:09:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-10 01:09:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 01:09:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-10 01:09:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-10 01:09:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-10 01:09:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-10 01:09:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-10 01:09:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:35,799 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-01-10 01:09:35,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:35,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956273958] [2022-01-10 01:09:35,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956273958] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:35,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:35,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:09:35,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000313261] [2022-01-10 01:09:35,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:35,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:09:35,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:35,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:09:35,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:09:35,800 INFO L87 Difference]: Start difference. First operand 6318 states and 8244 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 01:09:37,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:37,712 INFO L93 Difference]: Finished difference Result 21338 states and 28586 transitions. [2022-01-10 01:09:37,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 01:09:37,713 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 196 [2022-01-10 01:09:37,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:37,742 INFO L225 Difference]: With dead ends: 21338 [2022-01-10 01:09:37,742 INFO L226 Difference]: Without dead ends: 15378 [2022-01-10 01:09:37,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-01-10 01:09:37,751 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 817 mSDsluCounter, 2520 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:37,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [836 Valid, 3094 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:09:37,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15378 states. [2022-01-10 01:09:38,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15378 to 8160. [2022-01-10 01:09:38,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8160 states, 6104 states have (on average 1.3086500655307995) internal successors, (7988), 6155 states have internal predecessors, (7988), 1335 states have call successors, (1335), 720 states have call predecessors, (1335), 720 states have return successors, (1335), 1284 states have call predecessors, (1335), 1335 states have call successors, (1335) [2022-01-10 01:09:38,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8160 states to 8160 states and 10658 transitions. [2022-01-10 01:09:38,686 INFO L78 Accepts]: Start accepts. Automaton has 8160 states and 10658 transitions. Word has length 196 [2022-01-10 01:09:38,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:38,686 INFO L470 AbstractCegarLoop]: Abstraction has 8160 states and 10658 transitions. [2022-01-10 01:09:38,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 01:09:38,687 INFO L276 IsEmpty]: Start isEmpty. Operand 8160 states and 10658 transitions. [2022-01-10 01:09:38,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-01-10 01:09:38,697 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:38,697 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:38,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-10 01:09:38,697 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:38,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:38,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1333769863, now seen corresponding path program 1 times [2022-01-10 01:09:38,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:38,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078694902] [2022-01-10 01:09:38,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:38,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 01:09:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-10 01:09:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 01:09:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:09:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-10 01:09:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-10 01:09:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-10 01:09:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-10 01:09:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 01:09:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-10 01:09:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-10 01:09:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-10 01:09:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-10 01:09:38,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-10 01:09:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,811 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 16 proven. 24 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-01-10 01:09:38,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:38,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078694902] [2022-01-10 01:09:38,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078694902] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:09:38,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584472627] [2022-01-10 01:09:38,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:38,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:09:38,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:09:38,812 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 01:09:38,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 01:09:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:38,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 01:09:38,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:09:39,187 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 49 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-10 01:09:39,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:09:39,423 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-10 01:09:39,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584472627] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 01:09:39,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-10 01:09:39,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 7] total 14 [2022-01-10 01:09:39,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504649830] [2022-01-10 01:09:39,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:39,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:09:39,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:39,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:09:39,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-10 01:09:39,425 INFO L87 Difference]: Start difference. First operand 8160 states and 10658 transitions. Second operand has 5 states, 4 states have (on average 28.75) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 01:09:39,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:39,939 INFO L93 Difference]: Finished difference Result 13442 states and 17611 transitions. [2022-01-10 01:09:39,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:09:39,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 28.75) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 198 [2022-01-10 01:09:39,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:39,956 INFO L225 Difference]: With dead ends: 13442 [2022-01-10 01:09:39,956 INFO L226 Difference]: Without dead ends: 5488 [2022-01-10 01:09:40,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-10 01:09:40,037 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 2 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:40,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 871 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:40,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5488 states. [2022-01-10 01:09:40,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5488 to 5488. [2022-01-10 01:09:40,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5488 states, 4106 states have (on average 1.3080857282026304) internal successors, (5371), 4140 states have internal predecessors, (5371), 901 states have call successors, (901), 480 states have call predecessors, (901), 480 states have return successors, (901), 867 states have call predecessors, (901), 901 states have call successors, (901) [2022-01-10 01:09:40,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5488 states to 5488 states and 7173 transitions. [2022-01-10 01:09:40,717 INFO L78 Accepts]: Start accepts. Automaton has 5488 states and 7173 transitions. Word has length 198 [2022-01-10 01:09:40,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:40,718 INFO L470 AbstractCegarLoop]: Abstraction has 5488 states and 7173 transitions. [2022-01-10 01:09:40,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 28.75) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 01:09:40,718 INFO L276 IsEmpty]: Start isEmpty. Operand 5488 states and 7173 transitions. [2022-01-10 01:09:40,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-01-10 01:09:40,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:40,724 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:40,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-10 01:09:40,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:09:40,942 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:40,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:40,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1056461284, now seen corresponding path program 1 times [2022-01-10 01:09:40,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:40,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251561552] [2022-01-10 01:09:40,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:40,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:41,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:41,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 01:09:41,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:41,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-10 01:09:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:41,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 01:09:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:41,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:09:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:41,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-10 01:09:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:41,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-10 01:09:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:41,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-10 01:09:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:41,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-10 01:09:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:41,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-10 01:09:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:41,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-10 01:09:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:41,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-10 01:09:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:41,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-10 01:09:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:41,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-10 01:09:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:41,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-10 01:09:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:41,092 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-01-10 01:09:41,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:41,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251561552] [2022-01-10 01:09:41,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251561552] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:09:41,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274357065] [2022-01-10 01:09:41,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:41,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:09:41,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:09:41,094 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 01:09:41,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 01:09:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:41,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 01:09:41,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:09:41,855 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 71 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 01:09:41,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:09:42,298 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-01-10 01:09:42,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274357065] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 01:09:42,299 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 01:09:42,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 24 [2022-01-10 01:09:42,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574487615] [2022-01-10 01:09:42,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 01:09:42,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-10 01:09:42,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:42,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-10 01:09:42,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2022-01-10 01:09:42,300 INFO L87 Difference]: Start difference. First operand 5488 states and 7173 transitions. Second operand has 24 states, 24 states have (on average 14.375) internal successors, (345), 24 states have internal predecessors, (345), 9 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) [2022-01-10 01:09:54,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:54,935 INFO L93 Difference]: Finished difference Result 27311 states and 38275 transitions. [2022-01-10 01:09:54,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2022-01-10 01:09:54,936 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 14.375) internal successors, (345), 24 states have internal predecessors, (345), 9 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) Word has length 198 [2022-01-10 01:09:54,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:54,981 INFO L225 Difference]: With dead ends: 27311 [2022-01-10 01:09:54,981 INFO L226 Difference]: Without dead ends: 22107 [2022-01-10 01:09:54,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 417 SyntacticMatches, 1 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20333 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5256, Invalid=44696, Unknown=0, NotChecked=0, Total=49952 [2022-01-10 01:09:55,000 INFO L933 BasicCegarLoop]: 698 mSDtfsCounter, 10125 mSDsluCounter, 8137 mSDsCounter, 0 mSdLazyCounter, 12310 mSolverCounterSat, 4950 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10125 SdHoareTripleChecker+Valid, 8835 SdHoareTripleChecker+Invalid, 17260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4950 IncrementalHoareTripleChecker+Valid, 12310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:55,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10125 Valid, 8835 Invalid, 17260 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4950 Valid, 12310 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-01-10 01:09:55,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22107 states. [2022-01-10 01:09:56,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22107 to 11273. [2022-01-10 01:09:56,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11273 states, 8504 states have (on average 1.3065616180620885) internal successors, (11111), 8570 states have internal predecessors, (11111), 1785 states have call successors, (1785), 983 states have call predecessors, (1785), 983 states have return successors, (1785), 1719 states have call predecessors, (1785), 1785 states have call successors, (1785) [2022-01-10 01:09:56,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11273 states to 11273 states and 14681 transitions. [2022-01-10 01:09:56,458 INFO L78 Accepts]: Start accepts. Automaton has 11273 states and 14681 transitions. Word has length 198 [2022-01-10 01:09:56,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:56,458 INFO L470 AbstractCegarLoop]: Abstraction has 11273 states and 14681 transitions. [2022-01-10 01:09:56,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 14.375) internal successors, (345), 24 states have internal predecessors, (345), 9 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) [2022-01-10 01:09:56,458 INFO L276 IsEmpty]: Start isEmpty. Operand 11273 states and 14681 transitions. [2022-01-10 01:09:56,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-01-10 01:09:56,472 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:56,472 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:56,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-10 01:09:56,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:09:56,687 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:56,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:56,688 INFO L85 PathProgramCache]: Analyzing trace with hash 988856049, now seen corresponding path program 1 times [2022-01-10 01:09:56,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:56,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220586862] [2022-01-10 01:09:56,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:56,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:56,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:56,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 01:09:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:56,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-10 01:09:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:56,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 01:09:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:56,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:09:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:56,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-10 01:09:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:56,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-10 01:09:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:56,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-10 01:09:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:56,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-10 01:09:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:56,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-10 01:09:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:56,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-10 01:09:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:56,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-10 01:09:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:56,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-10 01:09:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:56,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-10 01:09:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:56,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-10 01:09:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:56,777 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-01-10 01:09:56,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:56,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220586862] [2022-01-10 01:09:56,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220586862] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:56,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:56,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:09:56,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319618143] [2022-01-10 01:09:56,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:56,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:09:56,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:56,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:09:56,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:56,778 INFO L87 Difference]: Start difference. First operand 11273 states and 14681 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 01:09:57,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:57,960 INFO L93 Difference]: Finished difference Result 21529 states and 28129 transitions. [2022-01-10 01:09:57,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:09:57,961 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 198 [2022-01-10 01:09:57,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:57,986 INFO L225 Difference]: With dead ends: 21529 [2022-01-10 01:09:57,986 INFO L226 Difference]: Without dead ends: 10523 [2022-01-10 01:09:58,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:58,003 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 287 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:58,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 442 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:09:58,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10523 states. [2022-01-10 01:09:59,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10523 to 10523. [2022-01-10 01:09:59,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10523 states, 7946 states have (on average 1.30845708532595) internal successors, (10397), 8008 states have internal predecessors, (10397), 1663 states have call successors, (1663), 913 states have call predecessors, (1663), 913 states have return successors, (1663), 1601 states have call predecessors, (1663), 1663 states have call successors, (1663) [2022-01-10 01:09:59,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10523 states to 10523 states and 13723 transitions. [2022-01-10 01:09:59,274 INFO L78 Accepts]: Start accepts. Automaton has 10523 states and 13723 transitions. Word has length 198 [2022-01-10 01:09:59,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:59,274 INFO L470 AbstractCegarLoop]: Abstraction has 10523 states and 13723 transitions. [2022-01-10 01:09:59,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 01:09:59,274 INFO L276 IsEmpty]: Start isEmpty. Operand 10523 states and 13723 transitions. [2022-01-10 01:09:59,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-01-10 01:09:59,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:59,286 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:09:59,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-10 01:09:59,286 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:59,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:59,286 INFO L85 PathProgramCache]: Analyzing trace with hash 2041661109, now seen corresponding path program 1 times [2022-01-10 01:09:59,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:59,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950700151] [2022-01-10 01:09:59,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:59,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:59,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:09:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:59,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 01:09:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:59,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-10 01:09:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:59,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 01:09:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:59,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:09:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:59,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-10 01:09:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:59,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-10 01:09:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:59,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-10 01:09:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:59,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-10 01:09:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:59,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-10 01:09:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:59,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-10 01:09:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:59,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-10 01:09:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:59,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-10 01:09:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:59,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-10 01:09:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:59,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-10 01:09:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:59,423 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 29 proven. 19 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-01-10 01:09:59,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:59,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950700151] [2022-01-10 01:09:59,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950700151] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:09:59,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100186226] [2022-01-10 01:09:59,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:59,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:09:59,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:09:59,424 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 01:09:59,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 01:09:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:59,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 01:09:59,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:09:59,878 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 66 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-10 01:09:59,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:10:00,150 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-01-10 01:10:00,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100186226] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 01:10:00,150 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 01:10:00,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-01-10 01:10:00,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331837321] [2022-01-10 01:10:00,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 01:10:00,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 01:10:00,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:00,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 01:10:00,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:10:00,152 INFO L87 Difference]: Start difference. First operand 10523 states and 13723 transitions. Second operand has 17 states, 17 states have (on average 15.235294117647058) internal successors, (259), 16 states have internal predecessors, (259), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-01-10 01:10:06,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:06,702 INFO L93 Difference]: Finished difference Result 32522 states and 44939 transitions. [2022-01-10 01:10:06,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-10 01:10:06,703 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 15.235294117647058) internal successors, (259), 16 states have internal predecessors, (259), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) Word has length 199 [2022-01-10 01:10:06,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:06,755 INFO L225 Difference]: With dead ends: 32522 [2022-01-10 01:10:06,755 INFO L226 Difference]: Without dead ends: 22305 [2022-01-10 01:10:06,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2052 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=886, Invalid=5594, Unknown=0, NotChecked=0, Total=6480 [2022-01-10 01:10:06,769 INFO L933 BasicCegarLoop]: 644 mSDtfsCounter, 3052 mSDsluCounter, 6325 mSDsCounter, 0 mSdLazyCounter, 5298 mSolverCounterSat, 1476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3052 SdHoareTripleChecker+Valid, 6969 SdHoareTripleChecker+Invalid, 6774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1476 IncrementalHoareTripleChecker+Valid, 5298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:06,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3052 Valid, 6969 Invalid, 6774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1476 Valid, 5298 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 01:10:06,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22305 states. [2022-01-10 01:10:08,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22305 to 11869. [2022-01-10 01:10:08,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11869 states, 8972 states have (on average 1.3039456085599643) internal successors, (11699), 9042 states have internal predecessors, (11699), 1863 states have call successors, (1863), 1033 states have call predecessors, (1863), 1033 states have return successors, (1863), 1793 states have call predecessors, (1863), 1863 states have call successors, (1863) [2022-01-10 01:10:08,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11869 states to 11869 states and 15425 transitions. [2022-01-10 01:10:08,489 INFO L78 Accepts]: Start accepts. Automaton has 11869 states and 15425 transitions. Word has length 199 [2022-01-10 01:10:08,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:08,489 INFO L470 AbstractCegarLoop]: Abstraction has 11869 states and 15425 transitions. [2022-01-10 01:10:08,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 15.235294117647058) internal successors, (259), 16 states have internal predecessors, (259), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-01-10 01:10:08,489 INFO L276 IsEmpty]: Start isEmpty. Operand 11869 states and 15425 transitions. [2022-01-10 01:10:08,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-01-10 01:10:08,504 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:08,504 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:10:08,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-10 01:10:08,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-01-10 01:10:08,720 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:08,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:08,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1117795559, now seen corresponding path program 1 times [2022-01-10 01:10:08,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:08,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453405329] [2022-01-10 01:10:08,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:08,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:08,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:10:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:08,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 01:10:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:08,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-10 01:10:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:08,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 01:10:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:08,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:10:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:08,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-10 01:10:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:08,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-10 01:10:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:08,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-10 01:10:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:08,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-10 01:10:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:08,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-10 01:10:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:08,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-10 01:10:08,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:08,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-10 01:10:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:08,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-10 01:10:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:08,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-10 01:10:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:08,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-10 01:10:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:08,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-10 01:10:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:08,813 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-01-10 01:10:08,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:08,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453405329] [2022-01-10 01:10:08,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453405329] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:08,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:08,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:10:08,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655226629] [2022-01-10 01:10:08,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:08,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:10:08,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:08,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:10:08,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:10:08,814 INFO L87 Difference]: Start difference. First operand 11869 states and 15425 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12)